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Cheap flights from Ontario to Duluth from $346

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Duluth departing on 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 5:38 pmONT  Ontario-DLH Duluth Intl
8h 38m1 stop Chicago O'Hare Intl
United Airlines Logo
11:16 am - 8:51 pmDLH  Duluth Intl-ONT Ontario
11h 35m2 stops Chicago O'Hare Intl Denver Intl
$454United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
9:25 am - 11:14 pmONT  Ontario-DLH Duluth Intl
11h 49m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
7:00 am - 8:15 pmDLH  Duluth Intl-ONT Ontario
15h 15m2 stops Chicago O'Hare Intl San Francisco
$459United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
7:00 am - 5:38 pmONT  Ontario-DLH Duluth Intl
8h 38m1 stop Chicago O'Hare Intl
United Airlines Logo
11:16 am - 6:47 pmDLH  Duluth Intl-ONT Ontario
9h 31m1 stop Chicago O'Hare Intl
$537United Airlines
Sat, Nov 14 - Wed, Nov 18

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United Airlines flights from Ontario to Duluth

Our best United Airlines deals on Ontario to Duluth flight tickets
United Airlines
Nov 14
ONT7:00 amOntario
8h 38m
1 stop
DLH5:38 pmDuluth Intl
Nov 18
DLH11:16 amDuluth Intl
11h 35m
2 stops
ONT8:51 pmOntario
$454
United Airlines
Nov 14
ONT9:25 amOntario
11h 49m
2 stops
DLH11:14 pmDuluth Intl
Nov 18
DLH7:00 amDuluth Intl
15h 15m
2 stops
ONT8:15 pmOntario
$459
United Airlines
Nov 14
ONT7:00 amOntario
8h 38m
1 stop
DLH5:38 pmDuluth Intl
Nov 18
DLH11:16 amDuluth Intl
9h 31m
1 stop
ONT6:47 pmOntario
$537

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Duluth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Ontario to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sat 11/14

7:00 am-5:38 pm

1 stop8h 38m

Duluth Intl

Wed 11/18

11:16 am-8:51 pm

2 stops11h 35m

$454

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sat 11/14

9:25 am-11:14 pm

2 stops11h 49m

Duluth Intl

Wed 11/18

7:00 am-8:15 pm

2 stops15h 15m

$459
Quickest round-trip

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sat 11/14

7:00 am-5:38 pm

1 stop8h 38m

Duluth Intl

Wed 11/18

11:16 am-6:47 pm

1 stop9h 31m

$537
Cheapest one-way

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Fri 9/18

7:13 pm-10:42 am

2 stops13h 29m

$346

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Fri 9/18

7:13 pm-10:42 am

2 stops13h 29m

$379

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sat 9/12

6:08 am-5:51 pm

2 stops9h 43m

$379

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sat 9/12

7:00 am-2:29 pm

1 stop29h 29m

$442

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Wed 9/16

7:00 am-2:29 pm

1 stop29h 29m

$522

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Fri 9/18

7:00 am-2:29 pm

1 stop29h 29m

$541
Quickest one-way

OntarioDuluth

ONT Ontario - DLH Duluth Intl

ONTDLH

Ontario

Sun 8/16

7:00 am-5:34 pm

1 stop8h 34m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Duluth from

How to get the cheapest flight ticket from Ontario to Duluth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Duluth Intl?

United Airlines is the most popular carrier operating from Ontario to Duluth Intl

When to book flights from Ontario to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Duluth according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Duluth (ONT to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Duluth

Fastest flight time

8h 38m

Direct flights

None
The fastest flight from Ontario to Duluth takes 8h 38m
There are no direct flights from Ontario to Duluth. There are no popular flight routes from Ontario to Duluth.
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Frequently asked questions about flying from Ontario to Duluth

  • How far is Ontario to Duluth Intl by plane?

    Duluth Intl is 1593.1 mi away from Ontario. Typically, this will take 8h 38m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Duluth Intl Airport?

    Prices for flights from Ontario Airport to Duluth Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Duluth Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Duluth Intl Airport.

  • What documentation or ID do you need to fly to Duluth Intl Airport?

    The travel and health documents required for your trip to Duluth Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Duluth Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Cloquet
Hayward

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Duluth?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Duluth from Ontario.

Can I find flights from Ontario to Duluth with flexible booking policies on momondo?

All flight searches from Ontario to Duluth on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Duluth?

Once you have performed a search for Ontario to Duluth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Duluth right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Duluth flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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